A 0.500 g sample of TNT (C2H5N206) is burned in a bomb calorimeter containing 610 grams of water at an initial temperature of 20.0°C. After the reaction, the final temperature of the water is
22.7°C. The heat capacity of the calorimeter is 420 J/°C.
How much heat was produced in the combustion of TNT?
A. 3374kJ
B. 8.04kJ
C. 2.97kJ
D. 8025 kJ
E. 3.37kJ
Was the heat released or absorbed by the water and calorimeter?
A. Absorbed
B. Released

answer: -

reaction:

na + cl ⇌ nacl

balanced chemical equation:

na + 2cl ⇌ nacl2

sodium + clorine goes to form sodium chloride (table salt).

the product is nacl2.

and the reactants are na and cl.

(note: if you don’t know what ⇌ means, read below: -

⇌(double head arrow) means reversible reaction).

for step 7 table c on the lab "newtons law of action"   the average time it took the car to travel .25 meters   was 1.92 seconds.

the average time it took the car to travel 0.50 meters was 2.61 seconds

hope this : )